Improvement in i ron



No. 2,688. PATENTBD JUNE 22, 1842. J. c. MQMANAWAY.

IRoN RBPINING FURNAOE.

\\\\\\t% v /MI 1 FUELS co., PHoTuumu.. WASHINGTON n r i UNITED .STATES PATENT FFICE.

JOHN c. MCMANAWAY, or PORTSMOUTH, OHIO.

, IMPRVEMENT lN IRONAREFjINING FURNACES.

Specification forming part of Letters Patent No. 2,681,3dated June 2.2, 1842.

`To all whom it may concern:

Beit known that I, JOHN C. McMANAwAY, of Portsmouth, in the county of Scioto and State of Ohio, have invented a new and Im,

proved Close-Fire Run-Out or Retining-Furnace for Smelting Pig-Iron or Scrap-Iron; and I do hereby declare that the following is a full and exact description.

The nature of my invention consists in making a close iire-place,which requires no lining, so that the heat can only escape in a vertical direction through the material to besmelted, and in connecting therewith a door or-'doors, sov that by opening the same a ready admission'is had to the interior at any time for the. purpose of renewing or repairing the bottom, for putting in heavy-chunks of iron, or for any other purpose, without the necessity of IelIlmLng` Qriderangiug any. other part of. the

furnace.`

To enable others skilled iu the art to make and use my invention, I will proceed to describei'ts construction and operation.

I construct myfurnaceof cast-iron plates,

.setting on .water-boxes, and surrounded by a chimney resting on upright posts. There may be three water-boXes--one on each side and oneat the back. Thoseon the sides (marked a, FigsJl and-9) are four feet six inches long,

`twelve inches wide, and fifteen inches high, with a hollow in the middle for containing water, which will leave the bottom, sides,and ends four inches thick. That on' the back is three feet long, and otherwise of the same di-4 mensions as those on the sides. In front, and occupyingrthe relative situation of the back water-box, is the tapping-plate m, Figs. 1 and 11, with ,a ange near its center horizontally, and an aperture two linches' Wide and four inches high in the center of the bottom edge, to run out the metal. On these are placed the plates forming the' furnace in such manner as that the inside of the plates are insh with the inside of the water-boxes, leaving the greater portion of the water-boxes, which are covered lwith a lid or plate of east-iron, projecting beyond and in front ofthe furnace-plates. The front and back plates of the furnace, which arein all respects alike, are cast inV two pieces,

thelower one of which, A, Figs.` 1 and 2, is the door. These doors are two feet high,th'ree feet wide, and three inches thick at bottom,

and about two feet nine inches wide, and one and one-half inch thick at top. To'prevent them from warping, a flange, d, Figs. I, 2, and 4, is cast in the center horizontally, which is three inches wide, and projectslfour inches in the center, diminishing to nothing at thesides. The bottom side of the door is cut out, leaving an aperture three inches wide and two feet six incheslong, through which to stirt-he materials in the furnace. These doors are hung to the upper plates by strong hinges or hooks, and shut between the lower parts of the sideplates, to which they may be fastened, when shut, by hooks or by pins, or. rod passing through e`ars in the side plates and in front of the doors. The upper part of the back and front B, Figs. 1 and 2, is i'ive feet six inches high, three feet wide, and one and onehalf inch thick at bottom, and one foot nine inches wide and one and one-quarterinch thick at tcp. Vithin rabout two inches of the top is cast a flange, o,

Figs. 2 and 4, to support the trundle-head plates, and at twelve inches from the ,bottom is a hole, n, Figs. 1 and 2, two inches diameter, to throw light on the molds at night and to examine and stir the materials. The side plates are cast in one or two pieces, as most convenient. Ifain two, (which is most advisable,) the lower' one, c, Figs. fand 3, corresponding to the doors in front and back, is two feet high, four feet wide, and three inches thick at bottom, and three feet two inches wide and one and one-half inch thick at top. On the lcwer side of these plates isleft one, two, or three holes forthe tuyere-pipesb b,.Figs.l and 3, six inches wide and high and semicircular on top. The upper side plates, D,Figs.1 and 3, are tive feet six inches high, two feet eleven inches wide, and one and onehalf inch thick at bottom, and one foot six inches wide and one'and one-quarter inch thick at top. Near the top is a flange, o, Fig. 5, similar to those onthe front and back plates, and for the same purpose. If cast in one piece, the same di mensions are preserved. These plates are then put together' in such a manner that the upper front and back plates rest against theedges of thev upper and upon the top edge of the lowerl side plates. Thev upper and lower side plates, .if cast in two pieces, are fastened together by projecting. flanges with bolts or by strong hooks, and all the foury plates are then connected together by bands, hoops, or clamps@ e,

Fig. .1, one4 near the bottom and topand .one

=at the 'cent-er'. Thus secured together, they form the frustum of a four-sided pyramid, resting,as'before described,onthewater-boxes.

Below the door, resting on the watenboxes and projecting horizontally in front,.is "a castiron fore plate, c, Eigs. l and 10, for the purpose of ,holding braze o r coal-dust to'keep in the blaze.

four or ve inches square and five feet high, and placed five feet apart. (Jn these are placed cast-iron plates? or'lintels, k k, Fig.'1, upon whichislouilt the chimney h h, Fig. 1. The chimney is fifteen feet high,taperingr suddenly aboye the opening tofour Ifeet square at top., lIn onesideofthe chimneyis an opening or Vdoorway two feet n ineinclle's wide, three feet. six'inehes high, the bottoni of` which is level.

with the'top of thefurnace-,plates' Through this opening andin'to the top ofthe furnacel is put the chargeofmetal and coal, and should be kept nearly or quite full While working.

At the top ofthe furn'aearesting on theflanges ofthe upper .plates and on the bottom of the opening in the chimney, isplacedaplate, Fig.

.8, four feet six inches longjand two feet nine inches wide, with' a hole the sizeof thetop'o Aroundfthe furnace thus lset up are four upright posts of cast-iron, ,ii/,.Figh

thefurnace O11 each side of this and resting against the sides of the doorway are set two other plates, Eig. 6, and at the back another, Fig. 7. These three trundle-head plates are eighteen inches wide, and are set. obliquely,

formi-ng a funnel-shaped v guard to prevent the A coals, &c., from falling down the sides of the furnace in putting in.` They may be made of cast or sheet iron, and fastened together in any convenient manner. In front of the doorway is a platform with steps to ascend withl theinetal and coals.

What I claim as my invention, and desire to1 secure by Letters Patent, is'-v Th'e addition of -a door or doors 'to a close- "lirerun-out or reiinery, whereby access' can mark. 

